(Error) Layout measurement override of element ...

[Andrew]

When adding a new DataFormComboBoxField
to my DataForm i get an error:

System.InvalidOperationException

Layout measurement override of element 'Microsoft.Windows.Design.Platform.SilverlightViewProducer+SilverlightContentHost' should not return PositiveInfinity as its DesiredSize, even if Infinity is passed in as available size.

This is in my ReadOnlyTemplate
I have the same element in my EditTemplate

The app works just fine but i cannot see the design as long as the elements is in there.

Here is the code:

<telerik:RadDataForm.ReadOnlyTemplate>
                            <DataTemplate>
                                <StackPanel>
                                    <telerik:DataFormDataField DataMemberBinding="{Binding Details.Name,Mode=OneTime}" Label="Client Name:" IsEnabled="False" />
                                    <telerik:DataFormDataField DataMemberBinding="{Binding Details.Description,Mode=OneTime}" Label="Description:" IsEnabled="False"/>
                                    <telerik:DataFormDataField DataMemberBinding="{Binding WebSite,Mode=OneTime}" Label="Web Site:" IsEnabled="False"/>
                                    <telerik:DataFormDataField DataMemberBinding="{Binding Details.Notes,Mode=OneTime}" Label="Notes:" IsEnabled="False" />
                                    <telerik:DataFormComboBoxField DataMemberBinding="{Binding VisibilityTypeId,Mode=TwoWay}" Label="Visibility:" DisplayMemberPath="Name" SelectedValuePath="Id" ItemsSource="{Binding Source={StaticResource Clients_VM}, Path=VisibilityTypes}" IsEnabled="False"/>
                                    <telerik:DataFormDataField DataMemberBinding="{Binding Core.StateFlag,Mode=OneTime}" Label="State Flag:" IsEnabled="False"/>
                                    <telerik:DataFormDataField DataMemberBinding="{Binding Core.Position,Mode=OneTime}" Label="Position:" IsEnabled="False"/>
                                    <telerik:DataFormComboBoxField DataMemberBinding="{Binding UserId,Mode=TwoWay}" Label="Owner:" DisplayMemberPath="UserGuid" SelectedValuePath="Id" ItemsSource="{Binding Source={StaticResource Clients_VM}, Path=Users}" IsEnabled="False"/>
                                </StackPanel>
                            </DataTemplate>
                        </telerik:RadDataForm.ReadOnlyTemplate>

it's the last element in the list.

[Vlad]

Hello,

 Can you change StackPanel in your DataTemplate to Grid to see what will be the result? 

Kind regards,
Vlad
the Telerik team

[Andrew]

Thanks Vlad.

I am afraid i was a bit impatient and changed the whole design completely to avoid the error.

Now I am using the RadDataForm inside a RadGridView, using it this way does not give me the error.

I am most likely to use the DataForm the other way quite soon and if I encounter the error again I will try it with a grid rather than a stackpanel.